AUTHOR=Gao Yu , Chen Xiangbin , Li Yuxi , Shen Yuchuan , Chen Xinyi , Xu Qing , Peng Mengling , Xu Wen , Yuan Jiamin , Hu Yuanyuan , Chen Xiankun , Xu Biyun , Yang Zhimin TITLE=Shuhe granule for insomnia: study protocol for a double-blind, randomized, placebo-controlled trial JOURNAL=Frontiers in Pharmacology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1542897 DOI=10.3389/fphar.2025.1542897 ISSN=1663-9812